Universal rotary fan

ABSTRACT

A universal rotary fan is provided including a supporting mechanism, a cylinder, a front net cover, a rear net cover, fan blades and a control mechanism, wherein the cylinder is mounted on the supporting mechanism; the front net cover and the rear end cover are arranged respectively on the front end face and the rear end face of the cylinder, the fan blades are located inside the cylinder; and the control mechanism is electrically connected with the fan blades. The supporting mechanism includes a support fixedly connected with the cylinder, and a rotating mechanism fixedly connected with the bottom end of the support. The rotating mechanism includes a bottom support, a pedal arranged at one end of the bottom support, a plug pin, and a turnplate body matched and connected with the plug pin, and the turnplate body is fixedly connected with the bottom of the cylinder.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to CN 201510505344.2, having a filingdate of Aug. 17, 2015, the entire contents of which are herebyincorporated by reference.

FIELD OF TECHNOLOGY

The following relates to the field of electrical equipment, inparticular to an industrial universal rotary fan.

BACKGROUND

An electric fan is a household appliance to accelerate air circulationby driving fan blades to rotate by means of a motor, and mainly used forcooling and refreshing, summer heat relief and air circulation, andwidely applied to places such as home, offices, stores, hospitals andhotels. The electric fan is mainly composed of a fan head, fan blades,net covers, a support frame, a control unit and other components. Thefan head includes a motor, a front end cover, a rear end cover, anoscillating air supply mechanism and the like.

An industrial cylindrical fan generally supplies air in a fixeddirection. When the air supply direction needs to be changed, a userusually needs to manually lift up the whole fan to adjust the settingangle of the fan.

However, the large volume and bulkiness of the industrial cylindricalfan makes it strenuous to lift, yet it may be necessary to change theair supply direction; that is, it is inconvenient to change the airsupply direction.

SUMMARY

An aspect relates to providing a universal rotary fan with the airsupply direction capable of being changed conveniently and effortlessly.

The aspect is achieved by the following technical solution. Theuniversal rotary fan includes a supporting mechanism, a cylinder, afront net cover, a rear net cover, fan blades and a control mechanism,wherein the cylinder is mounted on the supporting mechanism; the frontnet cover and the rear net cover are arranged respectively on the frontend face and the rear end face of the cylinder; the fan blades arelocated inside the cylinder; and the control mechanism is electricallyconnected with the fan blades. The supporting mechanism includes asupport fixedly connected with the cylinder, and a rotating mechanismfixedly connected with the bottom end of the support. The rotatingmechanism includes a bottom support, a pedal arranged at one end of thebottom support, a plug pin connected with the pedal through a steelwire, and a turnplate body matched and connected with the plug pin. Theturnplate body is fixedly connected with the bottom of the cylinder.

Compared with the known art, the universal rotary fan of embodiments ofthe present invention is provided with a rotating mechanism at thebottom of the fan, so that a user can adjust the air supply direction ofthe fan by stepping on the pedal and rotating the cylinder, andpositioning the universal rotary fan simply by releasing the pedal whilethe fan is in an ideal position. Thus the adjustment of the air supplyangle of the fan is achieved conveniently, rapidly and effortlessly.

Further, the bottom of the turnplate body is in the shape of a roundflat-bottom vessel, and the wall of the turnplate body is provided witha plurality of positioning holes that are matched with the plug pin, sothat the cooperative work of the plug pin and the turnplate body can beachieved by setting the positioning holes. Specifically, when the fanoperates normally, the plug pin penetrates through one positioning holein the turnplate body; when a user steps on the pedal, the steel wireconnected with the pedal is pulled by the pedal to drive the plug pinthat is connected with the other end of the steel wire to movebackwards, and accordingly the plug pin is separated from thepositioning hole in the turnplate body. After the cylinder is adjustedin a proper angle, the pedal can be released, and thereby the plug pinmoves forward and penetrates through the positioning hole thatcorresponds to this position, and thus positioning of the universalrotary fan is completed. The positioning holes in the turnplate body canbe arranged according to specific requirements; that is, the positioningholes can be evenly distributed in the wall of the bottom of theturnplate body, and can also be located in specific positionscorresponding to specific rotation angles. The number of positioningholes is determined by the precision of required adjustment angles. Themore the positioning holes are and the more densely the positioningholes are distributed, the more finely the air supply direction of thefan can be tuned.

Further, the rotating mechanism further includes a turnplate base,wherein the middle portion of the turnplate base is concaved inwards andmatched with the outside of the turnplate body, and a through holematched with the plug pin is formed in the side, where the plug pin islocated, of the wall formed through the inward concaved middle portionof the turnplate base. The shape, size and height of the through hole inthe wall of the turnplate base are the same as those of the positioningholes in the turnplate body. When the cylinder and the turnplate body,that is fixedly connected with the cylinder, are rotated, and anypositioning hole coincides with the through hole of the turnplate base,releasing the pedal can make the plug pin penetrate through the throughhole and further through the positioning hole in the correspondingposition to stop the turnplate from rotating. Thus, the universal rotaryfan is positioned.

Further, a plug pin guide base is sheathed outside the plug pin, clampedoutside the through hole of the turnplate base, and is coaxial with thepositioning holes in the turnplate body. Since the plug pin guide baseis sheathed outside the plug pin, and the cross section of the plug pinguide base is larger than that of the through hole in the turnplatebase, the plug pin guide base is clamped outside the through hole in theturnplate base all the time in the reciprocating movement of the plugpin. In this way, the direction of motion of the plug pin is stable, andthe situation where the plug pin deviates from the movement directionand consequentially cannot be inserted into the correspondingpositioning hole is avoided. When the cylinder and the turnplate bodythat is fixedly connected with the cylinder are rotated, and anypositioning hole coincides with the through hole of the turnplate base,releasing the pedal can make the plug pin penetrate through the throughhole and further through the positioning hole in the correspondingposition to stop the turnplate from rotating, and thus the universalrotary fan is positioned.

Further, the center between the turnplate body and the turnplate base isprovided with central through holes that are interconnected, throughwhich both of them can be coaxially connected with each other. In thisway, the turnplate body can rotate relative to the turnplate base, andboth of them cannot be separated from each other in the axial direction.

Further, the turnplate body and the turnplate base are coaxiallyconnected through a bolt and a nut. Specifically, a ball groove and aball are arranged at the joint of the turnplate body and the turnplatebase so that the turnplate body can smoothly rotate relative to theturnplate base.

Further, two wheels are coaxially arranged at the end, away from thepedal, of the bottom support. In this way, the universal rotary fan canbe transported conveniently.

Further, two supporting legs are arranged at the bottom of the otherend, opposite to the two wheels, of the bottom support, and the bottomsurfaces of the two supporting legs and the bottom surfaces of the twowheels are located on the same horizontal plane. In this way, theoperating stability of the fan can be guaranteed.

For better understanding and implementation, embodiments of the presentinvention will be described in detail with reference to the followingdrawings.

BRIEF DESCRIPTION

Some of the embodiments will be described in detail, with reference tothe following figures, wherein like designations denote like members,wherein:

FIG. 1 is a stereoscopic structure schematic diagram of the universalrotary fan;

FIG. 2 is a rear-view structure schematic diagram of the universalrotary fan;

FIG. 3 is a structure decomposition schematic diagram of the rotatingmechanism 120;

FIG. 4 is a partial section-view schematic diagram of a plug pin, in anopen state, of the universal rotary fan;

FIG. 5 is an enlarged section-view schematic diagram of B in FIG. 4;

FIG. 6 is a partial section-view schematic diagram of the plug pin, in aclosed state, of the universal rotary fan;

FIG. 7 is an enlarged section-view schematic diagram of C in FIG. 6;

FIG. 8 is a working-state schematic diagram of the universal rotary fanwhen the universal rotary fan rotates counterclockwise; and

FIG. 9 is a working-state schematic diagram of the universal rotary fanwhen the universal rotary fan rotates clockwise.

DETAILED DESCRIPTION OF THE EMBODIMENTS

FIG. 1 is the stereoscopic structure schematic diagram of the universalrotary fan of an embodiment of the present invention, and FIG. 2 is therear-view structure schematic diagram of the universal rotary fan of anembodiment of the present invention. The universal rotary fan includes asupporting mechanism 100, a cylinder 200, a front net cover 300 (notshown in FIG. 1 and FIG. 2), a rear net cover 400, fan blades 500 and acontrol mechanism 600, wherein the cylinder 200 is mounted on thesupporting mechanism 100; the front net cover 300 and the rear net cover400 are arranged respectively on the front end face and the rear endface of the cylinder 200; the fan blades 500 are located inside thecylinder; and the control mechanism 600 is electrically connected withthe fan blades 500. The supporting mechanism 100 used for supporting andinstalling other fan components, includes a support 110 used for fixedlyinstalling the cylinder 200, and a rotating mechanism 120 fixedlyconnected with the bottom end of the support 110 and used for supportingand rotating the fan. The control mechanism 600 is used for driving thefan blades 500 to supply air.

FIG. 3 is the structure decomposition schematic diagram of the rotatingmechanism 120. The rotating mechanism 120 includes a bottom support 121,a pedal 122 arranged at one end of the bottom support, a plug pin 124connected with the pedal 122 through a steel wire 123, and a turnplatebody 125 matched and connected with the plug pin 124. The turnplate body125 is fixedly connected with the bottom of the cylinder 200. In thisembodiment, the bottom of the turnplate body 125 is in the shape of around flat-bottom vessel, and the wall of the turnplate body 125 isprovided with a plurality of positioning holes 1251 that are matchedwith the plug pin 124; the top of the turnplate body 125 is in the shapeof a square support, and the walls on the four edges thereof are fixedlyconnected with the cylinder 200. The rotating mechanism 120 furtherincludes a turnplate base 126 fixedly installed on the middle portion ofthe bottom support, wherein the middle portion of the turnplate base 126is concaved inwards and matched with the outside of the turnplate body125, and a through hole matched with the plug pin 124 is formed in theside, where the plug pin 124 is located, of the wall formed through theinwards concaved middle portion of the turnplate base 126. A plug pinguide base 127 is sheathed outside the plug pin 124 and clamped outsidethe through hole of the turnplate base 126.

The positioning holes 1251 in the turnplate body 125 can be arrangedaccording to specific requirements; that is, the positioning holes 1251can be evenly distributed in the wall of the bottom of the turnplatebody 125, and can also be located in specific positions corresponding tospecific rotation angles; the number of the positioning holes 1251 isdetermined by the precision of required adjustment angles. The more thepositioning holes 1251 are and the more densely the positioning holes1251 are distributed, the more finely the air supply direction of thefan can be tuned. In this embodiment, the positioning holes 1251 areevenly distributed in the wall of the bottom of the turnplate body 125.

For achieving the purpose that the turnplate body 125 can rotaterelative to the turnplate base 126, the turnplate body 125 and theturnplate base 126 are coaxially connected and cannot be separated inthe axial direction. Specifically, the center between the turnplate body125 and the turnplate base 126 is provided with central through holesthat are interconnected, through which both of them can be coaxiallyconnected with each other through a bolt and a nut. Preferably, a ballgroove (not shown in FIG. 3) and a ball (not shown in FIG. 3) arearranged at the joint of the turnplate body 125 and the turnplate base126 so that the turnplate body 125 can smoothly rotate around thecentral axis relative to the turnplate base 126. The structures of theball groove and the ball are the same as those in the prior art, and canbe arranged by taking the existing rotary structure as the reference.

Furthermore, for moving the universal rotary fan conveniently, twowheels 128 are coaxially arranged at the end, away from the pedal 122,of the bottom support 121 of the universal rotary fan. For keeping theuniversal rotary fan stable during its operation, two supporting legs129 are arranged at the bottom of the other end, opposite to the twowheels 128, of the bottom support 121, and the bottom surfaces of thetwo supporting legs 129 and the bottom surfaces of the two wheels 128are located on the same horizontal plane. In this way, the bottom of theuniversal rotary fan is kept stable when the universal rotary fanoperates, and the heights of the front end and the rear end of thebottom support 121 are consistent; when the universal rotary fan needsto be moved, a user just needs to incline the fan towards the wheels128, and then the fan can be pushed or pulled conveniently andeffortlessly.

FIG. 4 is the partial section-view schematic diagram of the plug pin, inthe open state, of the universal rotary fan of an embodiment of thepresent invention; FIG. 5 is the enlarged section-view schematic diagramof the B part in FIG. 4; FIG. 6 is the partial section-view schematicdiagram of the plug pin, in the closed state, of the universal rotaryfan of the present invention; FIG. 7 is the enlarged section-viewschematic diagram of a C part in FIG. 6. A description of the workingprinciple of the universal rotary fan is given as follows with theforegoing accompanying drawings.

When the universal rotary fan operates normally, the plug pin 124 is inclosed state, and is inserted into the through hole in the turnplatebase 126 and the positioning hole 1251, which is located in the sameaxis as the through hole in the turnplate body 125, so that theuniversal rotary fan can supply air in one fixed direction. When the airsupply direction of the fan needs to be adjusted, the user steps on thepedal 122, so that the pedal 122 pulls the steel wire 123 that isfixedly connected with the pedal 122 outwards, and the steel wire 123drives the plug pin 124 that is fixedly connected with the other end ofthe steel wire 123 to move outwards, thus making the plug pin 124separated from the positioning hole 1251 in the turnplate body 125 anddisengaged from the through hole in the turnplate base 126. At themoment, the user can rotate the cylinder 200 clockwise orcounterclockwise, which drives the turnplate body 125 fixedly connectedwith the cylinder 200 to rotate around the central axis. When thecylinder 200 and the turnplate body 125 are rotated to the ideal airsupply angle, the positioning hole 1251 in the corresponding positionshall be aligned to the plug pin guide base 127. The plug pin 124 isinserted into the positioning hole 1251 after the pedal 122 is released,to position the universal rotary fan, and thus adjustment of the airsupply angle of the fan is completed.

The positioning holes 1251 can be arranged according to actualrequirements, and in this embodiment, the positioning holes 1251 areevenly distributed in the wall of the bottom of the turnplate body 125.The more the positioning holes 1251 and the more densely the positioningholes 1251 are distributed, the more finely the air supply direction ofthe fan can be tuned. Therefore, more of positioning holes 1251 enablethe user to adjust the air supply direction more easily, and to fix theair supply direction at any proper position by releasing the pedal 122.

In other embodiments, the positioning holes 1251 can be set only atfixed angles so that the fan can be fixed only in certain air supplyangles. Generally, the fixed positions are the most common positions, toshorten the time required for adjusting the air supply direction of thefan. The user can choose to directly rotate the fan to the requiredangle position, thus positioning the universal rotary fan convenientlyand rapidly.

FIG. 8 is the working-state schematic diagram of the universal rotaryfan of an embodiment of the present invention when the universal rotaryfan rotates counterclockwise; FIG. 9 is the working-state schematicdiagram of the universal rotary fan of an embodiment of the presentinvention when the universal rotary fan rotates clockwise. In theuniversal rotary fan, the cylinder 200 can be rotated clockwise andcounterclockwise, and the cylinder 200 and the turnplate body 125 can berotated freely without position limitations as long as the user keepsstepping on the pedal 122 until the cylinder 200 and the turnplate body125 are adjusted to the proper positions, and then the pedal 122 isreleased for positioning. In this way, the user can adjust the airsupply angle of the fan more freely and does not need to memorize thespecific rotating direction.

Compared with the known art, the universal rotary fan of the embodimentsof the present invention is provided with the rotating mechanism 120 atthe bottom. The user can adjust the air supply direction of the fan bystepping on the pedal 122 and rotating the cylinder 200. Positioning ofthe universal rotary fan can be completed simply by releasing the pedalwhen the user adjusts the air supply direction of the fan to the idealposition, and accordingly adjustment of the air supply angle of the fanis achieved conveniently, rapidly and effortlessly.

Although the present invention has been disclosed in the form ofpreferred embodiments and variations thereon, it will be understood thatnumerous additional modifications and variations could be made theretowithout departing from the scope of the invention.

For the sake of clarity, it is to be understood that the use of “a” or“an” throughout this application does not exclude a plurality, and“comprising” does not exclude other steps or elements.

What is claimed is:
 1. A universal rotary fan, including a supportingmechanism, a cylinder mounted on the supporting mechanism, a front netcover and a rear net cover arranged respectively on a front end face anda rear end face of the cylinder, fan blades are located inside thecylinder, and a control mechanism electrically connected with the fanblades, wherein, the supporting mechanism includes a support fixedlyconnected with the cylinder, and a rotating mechanism fixedly connectedwith the bottom end of the support; the rotating mechanism includes abottom support, a pedal arranged at one end of the bottom support, aplug pin connected with the pedal through a steel wire, and a turnplatebody matched connected with the plug pin, and the turnplate body isfixedly connected with a bottom of the cylinder.
 2. The universal rotaryfan according to claim 1, wherein a bottom of the turnplate body is in ashape of a round flat-bottom vessel, and a wall of the turnplate body isprovided with a plurality of positioning holes that are matched with theplug pin.
 3. The universal rotary fan according to claim 2, the rotatingmechanism further includes a turnplate base, wherein a middle portion ofthe turnplate base is concave inwards and matched with an outside of theturnplate body, and a through hole matched with the plug pin is formedin a side, where the plug pin is located, of the wall formed through theinward concave middle portion of the turnplate base.
 4. The universalrotary fan according to claim 3, wherein a plug pin guide base issheathed outside the plug pin, clamped outside the through hole in theturnplate base.
 5. The universal rotary fan according to claim 1,wherein the center between the turnplate body and the turnplate base isprovided with central through holes that are interconnected, throughwhich both of them can be coaxially connected with each other.
 6. Theuniversal rotary fan according to claim 5, wherein the turnplate bodyand the turnplate base are coaxially connected through a bolt and a nut.7. The universal rotary fan according to claim 6, wherein two wheels arecoaxially arranged at an end, away from the pedal, of the bottomsupport.
 8. The universal rotary fan according to claim 5, wherein twosupporting legs are arranged at the bottom of the other end, opposite tothe two wheels, of the bottom support, and the bottom surfaces of thetwo supporting legs and the bottom surfaces of the two wheels arelocated on the same horizontal plane.